On Wrinkling in Sandwich Panels with an Orthotropic Core
[ 1 ] Instytut Analizy Konstrukcji, Wydział Inżynierii Lądowej i Transportu, Politechnika Poznańska | [ P ] pracownik
2021
artykuł naukowy
angielski
- sandwich panels
- local instability
- strain energy
- wrinkling
- orthotropic core
EN This paper deals with the local loss of stability (wrinkling) problem of a thin facing of a sandwich panel. Classical solutions to the problem of a facing instability resting on a homogeneous and isotropic substructure (a core) are compared. The relations between strain energy components associated with different forms of core deformations are discussed. Next, a new solution for the orthotropic core is presented in detail, which is consistent with the classic solution for the isotropic core. Selected numerical examples confirm the correctness of the analytical formulas. In the last part, parametric analyses are carried out to illustrate the sensitivity of wrinkling stress to a change in the material parameters of the core. These analyses illustrate the possibility of using the equations derived in the article for the variability of Poisson’s ratio from −1 to 1 and for material parameters strongly deviating from isotropy.
03.09.2021
5043-1 - 5043-18
Article Number: 5043
CC BY (uznanie autorstwa)
otwarte czasopismo
ostateczna wersja opublikowana
w momencie opublikowania
publiczny
140
140
3,748